One rule that doesn't make any sense occurs on The Price Is Right. Bob always tells contestants not to prematurely stop the Range Finder during the Range Game because it can't be started again for another 36 hours (it changes every time). As long as the price hasn't been revealed, it should be able to move again.
Another example is Password Plus. The Host announced that antonyms could no longer be given. For instance, if the word to be guessed was "hot", you can not use "cold". I thought this was unfair cosidering opposites had been regularly acceptable. It would have wrecked my game strategy had I been a contestant.

Do you have others to add to the list?

I think Bob Barker exaggerates the rules with RANGE GAME, on a joking basis, and, I think the reason he says in the minimum of 24 or 36 hours is because each game normally, is only played once a week, unless, they're having reruns

I also mean to say, that BOB BARKER says can't start the RANGE GAME up again, for 24 or 36 hours, is because they only play each pricing game, once, during an episode